125kHz T5577 RFID Key Fob Proximity ID Token Label Rewritable(10PCS) (Black) Black industrial This is a four channels

This is a four channels self-locking relay module

or anything with high value and importance

Built in LED Torch Light

and the door is very flexible to open and close

0 Stick WiFi 802

125kHz T5577 RFID Key Fob Proximity ID Token Label Rewritable(10PCS) (Black) Black industrial This is a four channels125kHz T5577 RFID Key Fob Proximity ID Token Label Rewritable(10PCS) (Black) Chip: ATMEL T5577 (compatible with other universal 125kHz tags) Product Features Chip: ATMEL T5577 (compatible with other universal 125kHz tags) Note: You cannot add them to RFID locks directly. You must write data into them by a 125kHz RFID card writer before use. They are blank tags, no data inside. Frequency: 125kHz; Sensing Distance: 2. 5 to 10 cm (1 to 4 inch); Data